ML050960428
| ML050960428 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/30/2005 |
| From: | NRC/NRR/DLPM |
| To: | |
| Holland D, NRR/DLPM, 415-1436 | |
| Shared Package | |
| ML050970506 | List: |
| References | |
| TAC MC3799 | |
| Download: ML050960428 (1) | |
Text
EMERGENCY CORE COOLING SYSTEMS SURVEILLANCE REQUIREMENTS 4.5.2 Each ECCS subsystem shall be demonstrated OPERABLE:
- a.
At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by verifying that the following valves are in the indicated positions with power to the valve operators removed:
Valve Number Valve Function Valve Position 2CV-51 01 HPSI Hot Leg Injection Isolation Closed 2CV-5102 HPSI Hot Leg Injection Isolation Closed 2BS26 RWT Return Line Open
- b.
At least once per 31 days by verifying that each valve (manual, power operated or automatic) in the flow path that is not locked, sealed, or otherwise secured in position, is in its correct position.
- c.
By a visual inspection which verifies that no loose debris (rags, trash, clothing, etc.)
is present in the containment which could be transported to the containment sump and cause restriction of the pump suctions during LOCA conditions. This visual inspection shall be performed:
- 1. For all accessible areas of the containment prior to establishing CONTAINMENT INTEGRITY, and
- 2.
At least once daily of the areas affected within containment if containment has been entered that day, and during the final entry when CONTAINMENT INTEGRITY is established.
- d.
At least once per 18 months by a visual inspection of the containment sump and verifying that the subsystem suction inlets are not restricted by debris and that the sump components (trash racks, screens, etc.) show no evidence of structural distress or corrosion.
- e.
At least once per 18 months, during shutdown, by:
- 1. Verifying that each automatic valve in the flow path actuates to its correct position on SIAS and RAS test signals.
- 2.
Verifying that each of the following pumps start automatically upon receipt of a Safety Injection Actuation Test Signal:
- a.
High-Pressure Safety Injection pump.
- b.
Low-Pressure Safety Injection pump.
ARKANSAS - UNIT 2 3/4 5-4 Amendment No. 3Q,462,2-1_, 258